package com.sevici.action;

import com.sevici.model.Estacion;

public class UtilLocaBici {
	
	public  double dameDistacia (Estacion estacionA, Estacion estacionB){
		return distance (estacionA.getLatValueDouble(), estacionA.getLngValueDouble(),estacionB.getLatValueDouble(), estacionB.getLngValueDouble());
	}
	
	
	private double distance(double lat1, double lon1, double lat2, double lon2) {
		  double theta = lon1 - lon2;
		  double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta));
		  dist = Math.acos(dist);
		  dist = rad2deg(dist);
		  dist = dist * 60 * 1.1515;	
		  dist = dist * 1.609344;	
		  return (dist);
		}	
	private double deg2rad(double deg) {
		  return (deg * Math.PI / 180.0);
		}
	private double rad2deg(double rad) {
		  return (rad * 180.0 / Math.PI);
		}
}
